102666 has 16 divisors (see below), whose sum is σ = 209088. Its totient is φ = 33600.

The previous prime is 102653. The next prime is 102667. The reversal of 102666 is 666201.

102666 is a modest number, since divided by 666 gives 102 as remainder.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 102666.

It is not an unprimeable number, because it can be changed into a prime (102667) by changing a digit.

102666 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306 + ... + 546.

It is an arithmetic number, because the mean of its divisors is an integer number (13068).

2¹⁰²⁶⁶⁶ is an apocalyptic number.

102666 is an abundant number, since it is smaller than the sum of its proper divisors (106422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102666 is a wasteful number, since it uses less digits than its factorization.

102666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 102666 is about 320.4153554373. The cubic root of 102666 is about 46.8247586142.

Adding to 102666 its reverse (666201), we get a palindrome (768867).

The spelling of 102666 in words is "one hundred two thousand, six hundred sixty-six".